Subic comprises 16 barangays with an estimated population of 143,010. 2 of its barangays (12%) are connectivity dead zones with no recorded cell tower from either the national registry or crowdsourced data.
| Barangay | Population | Towers | Coverage |
|---|---|---|---|
| Aningway Sacatihan | 4,455 | 12 | Crowdsourced signal only (no registered tower) |
| Asinan Poblacion | 247 | 2 | Crowdsourced signal only (no registered tower) |
| Asinan Proper | 16,301 | 4 | Crowdsourced signal only (no registered tower) |
| Baraca-Camachile (Pob.) | 1,594 | 5 | Crowdsourced signal only (no registered tower) |
| Batiawan | 6,595 | 10 | Crowdsourced signal only (no registered tower) |
| Calapacuan | 21,390 | 5 | Crowdsourced signal only (no registered tower) |
| Calapandayan (Pob.) | 12,333 | 14 | Crowdsourced signal only (no registered tower) |
| Cawag | 25,928 | 24 | Crowdsourced signal only (no registered tower) |
| Ilwas (Pob.) | 416 | 6 | Crowdsourced signal only (no registered tower) |
| Mangan-Vaca | 7,680 | 18 | Crowdsourced signal only (no registered tower) |
| Matain | 6,192 | 6 | Crowdsourced signal only (no registered tower) |
| Naugsol | 16,765 | 0 | Dead zone: no towers from any source |
| Pamatawan | 2,774 | 4 | Crowdsourced signal only (no registered tower) |
| San Isidro | 13,552 | 0 | Dead zone: no towers from any source |
| Santo Tomas | 4,410 | 8 | Crowdsourced signal only (no registered tower) |
| Wawandue (Pob.) | 2,378 | 2 | Crowdsourced signal only (no registered tower) |